These days, Kummerspeck has a close relative in the form of CovidKilo's: weight gained during lockdown/home office. in a zoo, as the zoo's of old with their small spaces and little regard for natural habitat gave a polar bear nothing better to do than pace up and down. The literal translation would be polarbearing.
I'd like to see the word "paradox" used more, but some may confuse it at first(while trying to put it front of mind)by saying "pair of ducks".